The saga of Edward Snowden, the former national security contractor on the lam from U.S. authorities for leaking classified information, keeps getting weirder.

After arriving in Russia from Hong Kong with a revoked U.S. passport, Snowden found himself marooned in the transit zone of Sheremetyevo Airport, a man without diplomatic privileges and someone who is most definitely a person of interest to foreign authorities. So what's on the mind of the Russian intelligence service FSB as Snowden continues his Russian adventure?

Readers of Capitol Quip want to know.

Leave us your caption in the comments section below. Editors will pick five finalists on Wednesday, and then everyone can vote for the winner until Friday morning. The winner gets a signed print from illustrator R.J. Matson.

Looking for guidance on what makes a good caption? Check out past winners on Pinterest.